The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2009
Filed:
Sep. 27, 2005
Applicants:
Joerg Hinrich Fechner, Mainz, DE;
Franz Ott, Mitterteich, DE;
Inventors:
Joerg Hinrich Fechner, Mainz, DE;
Franz Ott, Mitterteich, DE;
Assignee:
Schott AG, Mainz, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C 3/087 (2006.01);
U.S. Cl.
CPC ...
Abstract
The alumino-silicate glass for lamp bulbs with molybdenum components contains alkaline earth metals and has the following composition (in % by weight based on oxide): SiO>58 to 62, AlO15 to 17.5, MgO 0.1 to <1, CaO 5.5 to 14, SrO 0 to 8, BaO 6 to 17, ZrO0 to 1, CeO0 to 0.3, TiO0 to 5, MoO0 to 2, BiO0 to 4, with a sum total amount of alkaline earth oxides from 11.6 to 29. In addition, the alumino-silicate glass is free of BOso that it has a high thermal stability. Lamp bulbs made with this glass can withstand a bulb temperature of greater than 650° C.